—How far apart do they live？— I know they live in the same neighbourhood. A. As long as B

问题补充：

—How far apart do they live？

— I know, they live in the same neighbourhood.

A. As long as

B. As far as

C. As well as

D. As often as

答案：

A. As long as

(答案→)B. As far as

C. As well as

D. As often as

解析：据我所知。